a hand holding a letter of warning

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Size: 6000px × 4000px
Photo credit: © jong ho shin / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: -learning, background, blue, business, communication, computer, concep, connection, contact, cyberspace, education, feedback, improvement, information, learning, online, school, shape, studying, success, teaching, technology, text, training, web, wisdom, word